Elevator-door lock.



A. M. COYLE.

ELEVATOB. DOOR LOCK.

APPLIOATION FILED Nov. 1s, 1905.

1,102,477., Patented July 7, 1914.

4 SHEETS-SHEET 1.

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ELBVATOR DOOR LOCK.

APPLICATION FILED Nov. 1s, 1905.

,12,477 Patented July 7,1914.

4 SHEBTS*SHEBT 2.

WITNESSES: l INVENTOR 27am/Cj jm? BY ATTORNEY ATTORNEY 4 SHEETS-SHEET 3.

Patented July 7, 1914.'l

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A. M. COYLE. ELEVATOR DOOR LOCK.

APPLICATION FILED NOV.13, 1905. 1,102,4'?7. Patented July 7, 1914.

4 SHEETSSHEET 4.

nvcn'o: l l l l l l I l ...MW y MMM 77M., cfs M M. COYLE, OF NEW YORK,

N. Y., A ssrGNon To omis nLEvA'roR COMPANY, or

JERSEY CITY, NEW JERSEY, A CORPORATION OF JERSEY.

ELEvA'roizfDooB. Loox.

inseam.

Specification of Letters Patent.

Patented. July 7, 1914.'

` Application led November 13, 1905. Serial No. 286,984.

T0 all whom it may concern,

Be it known that I, ANDREW M. CoYLE, a citizen of the United States, residing in the city of New York, in the county of New York and State of New York, have invented a new and useful Improvement in Elevator-Door Locks, of which .the following is a specification.

My invention relates to door locks, particularly such 'as are used for locking elevator doors, and one of its objects is the provision of simple, eilicient, and safe means for locking a door.

A further object of my vinvention is to provide means connected with the car for operating said door lock.

Another object ofthe invention is the provision of a circuit closer to co-act with said operating-means and control cooperating means.

Other objects of my invention will appear hereinafter, the novel combinations of elements being set forth in the claims.

ln the accompanying drawings, Figure 1 represent a longitudinal section of the locking mechanism in unlocked position; Fig. 2 is a similar view, but showing the parts in locking position; Fig..3 shows the operating means with the circuit closer co-acting therewith; Fig. 4 is a plan view of the device shown in Fig. 3; Fig. 5 shows a modification in that a lock in open position for a sliding door is shown; Fig. 6 shows the same in locked position; Fig. 'l' is a sectional view of the device shown in Fig. 5 taken on the line a-a and looking in the direction of the i arrows; Fig. 8 is an enlarged detail section on the line b-b of Fig. 6 and looking in the direction of the arrows; and'Fig. 9 shows diagrammatically an yelevator' system with my invention applied thereto and in particular a means for operating the electromagnetic cam on the car and for controlling the car operating means.

1 designates the lock easing which is to be placed in the jamb of the door or secured thereto. 2 is the keeper casing to be placed in a swinging door such that when the door is closed, the said casings shall be opposite cach other as shown in Figs. 1 and-2. The face plates 3 and 4 of the respective casings are provided with openings 5, 6, 7 and 8.

Adapted to slide through the uppero'penin ing is a latch 9 to which is secured the latch 6 in the face plate 4 of the keeper casbolt 10. The latch bolt 10 is supported at its right-hand ,end in the rectangular recess 22 in the lug 11, and is prevented from being moved from this recess by the lock plate (not shown) which is adapted to be secured tothe keepercasing at the points 23 and 24.

rl`he latch 9, which is adapted tostrike against a cam face 47 (Fig. 3) and engage the thrust `plate 43, is provided with ashoulder 19 against which bears a spring 18, the latter passing around the ixed lug 21 and held in place tends to force the latch outwardly or to lthe left but this movement is limited by the head 13 of lever 37 herein shown as pivoted about at the central right hand portion of the keeper casing, which head is engaged by ythe lug 12 when the latch is movedto the left. ln order lto move the latch to the right, or entirely within the keeper casing, a knob ,connected to the spindle 15 to which thev lever arm 14 .is rigidly secured, must be turned to move the head 13 to the right. At the same time a downwardly extending llever arm 16 which is also rigidly secured to the spindle 15 is moved to the left so that ,the head 17 shall strike against and move .the sliding bar 25 to the left. rlhis move- 4,ment is limited by the projections 26 strik- :ing .against the lug 28 which has a rectangular recess to receive said sliding bar 25. lts movement in the opposite direction is ,limited by the lprojections 27 (Fig. 2). When the bar 25 is in its left-hand position, ,that is, Iwhen the latch is withdrawn as vshown in Fig. 1, the enlarged portion 29 of `said bar is substantially flush withthe face jlplate of the keeper casing as shown in fFig. 1.

ln substantial alinement with thesliding by the stop 20. The springA bar 25 is a sliding locking bar 30 in the lock casing l. T he movement of the lock bar 80 to the left is limited by the lug 31 fixed to the casing l. lt will be seen that when the bar 25 is in its extreme left-hand position and the door isl closed, the shoulder 45 engages the projection 31 while the righthand end of the bar 30 is substantially flush with the surface of the face plate 3 and opposite the head 29 .of thebar 25.

The bar 25 is guided by thc opening 8 while the bar 30 is guided by the opening 7. The downward projection on the bar '30 may also have a bearing 32.. it the upper part of the latch casing 1 is a bar 42 movlos . able in the opening in substantial alinedoor as shown in Fig. 1. '40

ment with the bar 10, and provided with an enlarged portion 43 which may besquare or rectangular, or any other desired shape. The bar 30 is pivoted at 35 tothe arm 36 of a lever 37 which is pivoted to the latch casing 1 at 39. The upper arm 38 is pivoted to the bar 42 at 41. Fixed to the lever 37 is some means such as a Weight 40 for moving the shoulder 45 against the stop 31 and placing the exposed ends o f the arms 42 and 30fsubstantially in the same plane or parallel with the face of the plate-3. IThe parts then assume the positions shown in F 1. Obviously the details'and arrangement of parts may be varied, as desired.

l/Vhen the spindle 15 is moved anti-clockwise or released, the comparatively strong spring 18 will act to move the bar 1 0 to the left and so also the bar 42. 'lhe bolt 30 and bar 25 will simultaneously be moved to the right untill the shoulder 46 abuts against a. portion of the latch casing 1 and the projections 27 engage the lug 28. Furthermore, if desired, the parts may be so constructed I that the spring 18 will contact with a portion of the keeper casing 2 and the weight 40 may be stopped by a portion of the lock casing.

lt will be seen that the levers 37 and 37 have substantially a parallel motion and that when the-lever 37 is moved counterclockwise to release the latch bar 10 and the sliding bar 25, the spring 18 will act to latch and lock the door as shown in Fig. 2. But vwhen the lever 37 is moved in the opposite direction vthe bolt 10 and bar 25 are positively 'actuated to unlatch Adapted to ass through an opening 34 in one or both sides of the lock casing 1 is ai bar 33 which may be guided by the bearing 32. When' the door is unlocked, that is, when the parts assume the positions indicated in Fig. 1, thepath of travel of the bar 33 is obstructed by the projection 32', but when the door is locked as shown in Fig. 2, the rod 33 is' free to move and when moved .into or through the lock casing 1 the door cannot be opened. lf this is attempted the shoulder 45 will immediately engage the lock bar 33 and further movement of the lock bolt 30 prevented. When the spindle 15 is rotated in a clock-wise direction to a certain .extent the upper end 13 of the lever arm 14 will engage the projection 12 to positively actuate the latch bar 10 to the right. VAt the same time the lower end 17 of the lever arm 16 will'engage the bar 25 to positively actuate the same to the left. This movement is transmitted to the lock bar'30 to positively move the latter to the left to unlock the door. This movement may be transmitted still further to force the bar 42 to the right and move the latch 9 to the right. The weight land unlock the 40 in such case may be omitted, but it is preferable to use it as it facilitates the action of the bars 30 and 42 to their positions as shown in Fig. 1. The principal function of the weight 40, however, is to maintain the bar 30 in its left-hand position while the door is open so that at this time lthe bolt 33 cannot be thrown through or into the lock casing.

lt will now be explained that so long as the bolt 33 is not in its locking position, an elevator car cannot be started away from a landing. rlhat is, before the car can start, the door must be closed, the spring 18 allowed to force the parts into positions shown in Fig. 2, and the bolt 33 projected through the opening 34 to locking position. Referring therefore to Figs. 3 and 9, it will be seen that an electro-magnetic cam mounted on the car co-acts with the door lock and also operates a' circuit closer controlling electric hoisting apparatus. rl`he apparatus in Fig. 9 is merely to illustrate an application of my invention. @ther electro-magnetic cams than that here shown may be used and any desired system of wiring and hoisting apparatus may be employed.

Back: of the door jamb 481 mountl an angle iron 49 having bearings 50 and 60 for a rock shaft 51. Adjacent the bearing 50 a lever arm 54 is secured to the rock-shaft 51, and at the lower end of this arm is pivoted the locking bolt- 33. The arm 54 is preferably adjustable along the shaft 51 so that after having once secured the keeper casing in the door jamb and the angle-plate 49 in the hoistway `the position of the lock bolt 33 may be adjusted. Secured to rock shaft 51 near the bearing is an additional arm 53 as shown in Fig. 3. rlhe outer end 56 of the arm 53 engages a U-'shaped recess 57 in the short arm 58 of a lever 59-pivoted on a vbearing 52 secured to the plate 49. rlhe lever V59 is in realityl a bell-crank its longer arm 62 extending upwardly and carrying at its outer end an anti-friction roller 61 which is adapted to be engaged by the verticalcam 63. This cam is flared outwardly at 64 and 65 so that there will be no uncertainty as to the roller 61 riding in the camA groove When desired. It will be noticed that the cam is open only on that side facing the angle plate 49. A To its closed side are pivoted the link 73 and the lever 9621s indicated in Fig. 9.

It should be particularly 'noted' that it is adistinct advantage to have the apparatus 4operated by the cam mechanism located in the way shown in Fig. 4, for the reason that the doors and door 4locks may not be in vertical alinement along the hoistway but nevertheless they may easily be brought into y operative position relative to the cam mechanisn by moving the arm 54 toward or from the arm 53. The arm 53 may also be admaaar? justedgalong the shaft 1 if necessary to bring it 4opposite 'the bell-crank A59. lThe cam 63 .being carried by the -oar will therefore bie able to engage any of the rollers 61 .5 which must be in substantial vertical alinement. lf the keeper casings are not in vertical ali-nement the angle plate 49 may be varied in'lengtla -or the lever -54 may be shifted along the sha-ft -51 until the proper l@ adjustment is secured. Furthermore, it

should be noted that the mechanism for actuating the locking bolt 33 is located in a place which is practically inaccessible from theca-r er .a landing. Besides, this actuatn ing mechanism projects into the well at a point where it is unlikely to be crowded by the car, for it is `placed to one side ofthe car travel where the usual guideways necessitate a certain space which has been heretofore .practically unavailable for any useful purpose except wiring. A When the locking bolt 33 locks the door, as shown in Fig. 3, a spring-pressed circuit- .closing plate 66 connects the contacts 67 and y 68 which are connected to the binding posts 69 and '70, respectively, and mounted on the insulation 97. This circuit closer is on the car and is controlled by the electro-magnetic cain so that the car cannot start unless said circuit closer is in closed position. This is illustrated inFig. 9 wherein 'C designates an elevator carconnected by the hoisting cable 99 over asheave 100 to the hoisting apparatus 101 which is adapted to be oper- :ated by the electric motor v109.. B designates the brake mechanism; R, R', the reversing' switches; S, the manual controlling switch in the car; and M, the magnetic cam vconnected in any suitable manner to the car. 4o 2 The solenoid 103 of the cam M is connected to the car switch in such manner that whenever the switch is -moved to operating position the said solenoid will be excited to lift its core- 104 and effect a movement of thecam 63 to the right.` rlhecam 63 may be of a length about equal to the height of the car or it may be made ofany other convenient length. lli/*hen the cam 63 is moved to the right the circuit closer 105 which is also 5o carried by the car is clo'sed and consequently a circuit is closed from the -lmain, and by way of suitable circuits through the circuit closer 105 and one or the other of the reversing switch magnets, the car switch and thence to the main. lt will be noticed that the solenoid 103 is connected directly across the mains. Upon the closing of the selected reversing switch the electric motor 102 and brake mechanism B will be 6o operated-to effect the actuating of the hoisting apparatus in the desired direction.

lt is now apparent that when the switch S is brought to central position the ca r will be stopped, the core or plunger 104 will 05 drop to move-:the cam 63 to the left and that before the circuit closer 105 can be 7@ yclosed the door must be fully locked, and

conversely the circuit closer 105 opened before the door is unlocked. In any event the relation of parts vshould be such that when the door is open and therefore the lug 32 75 is yin the pathv of the bolt 33 the cam 63 cannot 'be moved a sufficient distance to the right to allow the circuits for the reversing switch magnets to be closed. While the car is being vmoved past a floor the cam 63 rides 80 over the roller 61 of the locking mechanism at that floor. In order to allow the car to come to a gradual stop the cam should be of al reasonable length for even after being moved to its dotted line position as shown g5 in Fig. 3 at 64 it may still ride over the roller 61 for a\short distance of travel of the car in coming gradually torest. l

In Figs. 5, 6, 7, and 8, I have shown locking mechanism embodying my invention applied to sliding doors. ln the keeper cafsing 1 is movzilily mounted a frame 75 which is held in its uppermost position by the spring 92 lbetween the cups or recesses 91 and 93. The 'upper portion 74 in this 95 instance' is shown narrower than the lower portion of the frame 75 and is adapted to move in the recess 76 at the upper part of the casing 1 in the path of the locking bolt 33. When the sliding door is open the loo lock casing 2 occupies a position oil' to the right and the bolt 33 cannot be projected into the keeper casing 1 through the opening 34a sufficient distance to allow the cirJ cuit closer 105 (Fig. 9) to be closed, the ma projection 74 being Iheld by the spring 92 inthe path of said bolt. The frame 75 has an opening 77 of such size and shape as to permit the insertion of the head 78 of the locking lever which is pivoted to the lock it@ casing at 79. 86 designates a cam which curves downwardly and is herein shown as forming art o-f the keeper casing 1. The under si e of the cam is inclined and is adapted to fit a corresponding inclined sur- 1 face 87 just below the opening 85 in the lock casing 2. A frame 89 carries a screw 88 for limiting the downward movement of the lever 95. This screw may be adjusted by inserting a screw driver through the 12@ bottom of the casing 2 and turning the screw head 90. rllhe lever .95 is held against the stop 88 by means of the comparatively strong spring 82 which is held in place by the lug 83. When the door is closed the ma head 78 rides over the surface of the cam 86 to move the lever 95 upwardly, thus placing' the spring l82 in tension. rlChe opening'84 in the face plate 3 being in' alinement with the opening 77 in the frame 75, asa

has done so, however, the spring 82 acts to l snap the lever 95 in locking position by moving the frame 75 to its lowermost position against the spring 92, as shown in Fig. 6. Now the locking bolt 33 may be moved a suficient distance. to eect the closure of theI circuit closer 105 (Fig. 9) and the elevator car may be started.

While the bolt 33 is in its locking position as indicated in Fig. 8 the frame 75 -cannot be moved upwardly asuiiicient distance to allow the head 78 to be withdrawn or the door opened. When the bolt 33 is Withdrawn which can occur only when the car is opposite the landing door, the spindle S1 maybe turned clockwise to rock the lever 80 and consequently lift the head or catch 78 to the position shown in Fig. 5 when the door may be readily opened.

Obviously those skilled in the art may make various changes in the details and arrangement of parts without departing from the spirit and scope of my invention, and l do not desire to be limited, therefore, to the precise construction herein shown and de? scribed.

What I claim and desire to have protected by Letters Patent of the United States is:

1. The combination with a car, of a door, means for operating the car, a switch controlling said operating means, a door latch, a latch-holding device, means for operating said latch into position to engage said latchholding device and hold the door closed,

and means first to lock. the latch in said holding position, and then operate said switch to start the car. Y,

2. The combination with a'zcar, of a door, a door latch, a manual device for operating v the latch, means for operating the car, a

switch carried by the car for controlling said car-operating-means, and means for first locking the door latch and then closing said switch to effect the starting of the car.

L3. rlfhe combination with a car and operating means therefor, of a vdoor,',a spring latch for the door, a manual device for releasing the latch, means for locking the latch, a switch separate from the lockingmeans, and means for successively operating said locking-means and said switch to lock said door before the car can be operated.

4. The combination with a car and operating means therefor, of a door, a manually operable latch for. the door, locking-means for said latch, a switch carried by the car,

and means for operating said locking means to lock the door and thereafter operate said switch to effect the operation of thecar.

.5. The combination with a car, of operating means therefor, a door, means for locking said door, a switch separate from said locking-means for controlling the car-opried by the car for controlling said operating means, a door, a spring latch and coperating keeper, a lock for said latch, and means controlled from the car for operating said door lock into position to prevent the said latch from being dis-engaged from its keeper, and thereafter closing said switch to eect the operation of the car.

7. rlhe combination with a car, of operating means therefor, a door, means for locking said door in closed position, an electric 30 switch separate from said locking means, a cam for operating said door-locking-means and said switch in the order mentioned, ai motor for actuating said cam, and means carried by the car forcontrolling said motor.

8. The combination with a ear, of operating means therefor, a door, door-locking. means, aswitch carried by the car for controlling said car-operating-means, an electromagnetic cam for operating said door- 9@ locking-means and said switch, and an additional switch for controlling said electromagnetic cam.

9. The combination with a car, of operating means therefor, a door, a latch for the g5 door, manually Yoperable means for operating the latch, locking means for said latch,

a switch separate from said locking means contro-lling said car operating means, mechanism for operating said locking means and said switch when the door is closed, and means coperati'ng with said mechanism yfor preventing the operation of said switch when the door is open. 4

10. The combination with a car, of operating means therefor, a door, a manually operable spring latch for the door, a lock for said latch, a device separate from the lock for controlling said car-operating-means, and automatic means for successively operating said device and said lock when the .car is brought to rest opposite such door.

11. The combination with a car, of operating means therefor, a door, a handv operated latch, a door-lock, a switch separatey from said lock for controlling said car-operatingmeans, means for successively operating said lock and said switch, and means in the lock for preventing the operation of said switch when the door is open.

12. The combination with an elevator car, o-f means for moving same, a well door, a manually operable latch therefor, locking mechanism for said doorwadevice independent of the locking mechanism for controlling 12'5 said moving means, and means for successively operating said locking mechanism and said device. A

1.3. The `combination with an.elevator car, of yhoisting apparatus. therefor, means for j, 30

operating said hoisting apparatus, a Well door, locking mechanism for said door, a switch carried by the car for controlling said operating-means, an electro-magnetic cam carried by the car for operating said locking mechanism and said switch, 'and manual means carried by the car for controlling` the operation of the hoisting apparatus and the operation of said electro-magnetic cam.

,14. InI an elevator, the combination with a car, of a door, a door lock, a rock shaft mounted back of the door jamb, a rock arm on said shaft and pivoted to a part of the door lock, a bell crank lever, a movable vertically arranged channel shaped cam carried at one side of the car and engaging one arm of the bell crank lever, and a second rock arm on said rock shaft and in engagement with the other arm of the bell crank lever.

15. In an elevator, the combinationwith a car, a door, a door lock comprising a bolt movable into and out of position to lock the door, a rock shaft back of the door jamb, a. l

, for actuating said bell crank lto effect the operation of said door lock.`

ln testimony whereof, I have signed my name to this specification in the presence of tvvo subscrlblng Wltnesses.

ANDREW M. COYLE.

Witnesses CHARLES M. NrssEN, PAUL DE MONTCALM. 

